A Torus Without Diagonals
Source
G4G14
Title
A Torus Without Diagonals
Creator
Akos Csaszar
Contributor
Gwen Fisher
Barry Hayes
Subject
Puzzle
Recreational Math
Description
Cut-and-fold a polyhedron with 7 vertices, 14 faces, 21 edges, and a hole through it like a doughnut. A cube has internal diagonals that connect the diametrically opposite corners. By contrast, this polyhedron has no internal diagonals. There are three other 14-faced polyhedra like this. The only other known example of a polyhedron with no diagonals is the tetrahedron.
Identifier
G14-045
Collection
Citation
Akos Csaszar, “A Torus Without Diagonals,” G4G Gift Exchange Archive, accessed May 13, 2025, https://g4gexchangearchive.omeka.net/items/show/1032.
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